ABCD is a rhombus. Its diagonals AC if the points D and M and satisfy `BD=2AC. `1+iand 2-i,where `i=sqrt(-1),`findA.

ABCD is a rhombus. Its diagonals AC and BD intersect at the point M and satisfy BD = 2AC .If he point D and M represent the complex numbers 1 + i and 2 - i respectively, then A represents the complex number......or......

ABCD is a rhombus. Show that diagonal AC bisects /_A as well as /_C and diagonal BD bisects /_B as well as /_Ddot

ABCD is a rhombus. The co-ordinates of vertices B and D are (4,7) and (-2,1) respectively . Find the equations of AC.

ABCD is a rhombus. The co-ordinates of A and Care (3, 6) and (-1, 2) respectively. Find the equation of BD.

In rhombus ABCD, diagonals AC and BD intersect each other at point O. If cosine of angle CAB is 0.6 and OB = 8 cm, find the lengths of the side and the diagonals of the rhombus.

Construct a rhombus ABCD, when : Diagonal AC=6.3cm and diagonal BD=5.8cm .

In a rhombus ABCD the diagonals AC and BD intersect at the point (3,4) . If the point A is (1,2) the diagonal BD has the equation

In the adjoining figure, ABCD is a quadrilateral. Its diagonals AC and BD intersect at point 'O'. Prove that : (a) AB+BC+CD+DA lt 2(AC+BD) (b) AB+BC+CD+DA gt (AC+BD)

ABCD is a rhombus with AC=2BD. Diagonals AC and BD intersect at P.E_(1),E_(2),E_(3) and E_(4) are four ellipes passing through P and their foci are A and B, B and C, C and D and D and A, respectively . If for i=1,2,3,4,e_(i) are the eccentricities fo E_(i) , then

If |z-1|=1, where z is a point on the argand plane, show that (z-2)/(z)=i tan (argz),where i=sqrt(-1).